# Anesthesia for Patients with Ear Disease: Vestibular Syndrome ## Key Takeaways - Vestibular syndrome, arising from peripheral or central dysfunction, significantly elevates anesthetic risk due to compromised balance, proprioception, and autonomic tone, necessitating careful preanesthetic neurologic assessment to differentiate between peripheral and central causes, as central disease implies higher risks of respiratory and cardiovascular instability. - Anesthetic drug selection must prioritize agents with minimal emetic potential and predictable cardiovascular profiles, with consideration for anticholinergic premedication (e.g., atropine, glycopyrrolate) to mitigate vagal tone-induced bradycardia, and prophylactic antiemetics like maropitant are strongly recommended to manage nausea and vomiting. - Airway management is critical, requiring secure endotracheal tube placement and verification of cuff integrity, especially during head repositioning, to prevent kinking or accidental extubation, and vigilance for the oculocardiac reflex during middle ear manipulation is paramount. - Monitoring priorities in vestibular patients include continuous assessment of mean arterial pressure (target >60 mmHg in dogs, >70 mmHg in cats), heart rate, ventilation (end-tidal CO2 35-45 mmHg), oxygenation (SpO2 >95%), and body temperature, with prompt intervention for bradycardia or hypotension. - Recovery requires a padded environment, assisted sternal recumbency, and careful extubation only after a strong swallowing reflex is present, with ongoing monitoring to distinguish residual vestibular signs from anesthetic complications and to manage potential aspiration or hypoventilation. - Distinguishing anesthetic complications from vestibular disease progression is crucial; reliance on jaw tone, heart rate trends, and end-tidal inhalant concentration is necessary when ocular reflexes are unreliable due to vestibular dysfunction. --- This article addresses anesthetic planning and perianesthetic management for small animal patients with ear disease, with particular emphasis on those presenting with vestibular syndrome. It serves veterinarians preparing dogs and cats for diagnostic imaging, ear flushing, bulla procedures, or other interventions where the underlying otologic pathology and its neurologic consequences directly influence anesthetic risk. The central clinical questions are how vestibular dysfunction alters anesthetic risk, how to mitigate nausea and postural instability, and how to distinguish signs of vestibular disease from anesthetic complications during recovery. The scope is deliberately limited to anesthetic considerations. Surgical techniques for ear disease are covered elsewhere. The focus here is on the physiologic and pharmacologic reasoning that underpins safe anesthetic care in a patient population where balance, proprioception, and autonomic tone are already compromised. ## At a Glance | Parameter | Consideration | |---|---| | Primary anesthetic risks | Nausea, vomiting, aspiration, postural instability, vagal tone alterations | | Key preanesthetic assessment | Neurologic examination to characterize peripheral versus central vestibular signs | | Cardiovascular effects | Potential bradycardia or hypotension from vagal stimulation, anticholinergic premedication may be indicated | | Drug selection principles | Avoid drugs with significant emetic potential, use antiemetic premedication where indicated | | Airway protection | Rapid sequence induction or careful airway management given aspiration risk | | Positioning | Secure head elevation, minimize head movement, padded support to prevent injury during nystagmus or falling | | Recovery planning | Quiet, dim environment, assisted standing, distinguish residual vestibular signs from anesthetic emergence | | Monitoring priorities | Depth, ventilation, oxygenation, heart rate, blood pressure, body temperature | | Reference guidance | [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/) | ## Pathophysiology of Vestibular Syndrome Relevant to Anesthesia Vestibular syndrome arises from dysfunction of the peripheral vestibular apparatus, the vestibular nerve, or the central vestibular pathways within the brainstem and cerebellum. Peripheral causes include otitis media and interna, which are common in dogs and cats with chronic ear disease, as well as idiopathic vestibular syndrome, neoplasia, and trauma. Central causes include inflammatory brain disease, vascular events, and neoplasia. The distinction between peripheral and central disease is critical because it changes the anesthetic risk profile. Central vestibular disease implies brainstem involvement, which raises concerns about altered consciousness, respiratory drive, thermoregulation, and cardiovascular regulation. The vestibular system exerts direct influences on autonomic output. Acute vestibular dysfunction frequently produces nausea, vomiting, and bradycardia through activation of the emetic center and vagal pathways. These autonomic effects are relevant to anesthesia because many anesthetic drugs either suppress or exacerbate them. The emetic center receives input from the chemoreceptor trigger zone, the vestibular nuclei, and the gastrointestinal tract, and anesthetic drugs act at multiple points along these pathways. ## Preanesthetic Assessment and Risk Stratification A complete neurologic examination is mandatory before anesthesia in any patient with suspected ear disease. The examination should characterize the laterality of vestibular signs, the presence or absence of nystagmus, the direction and character of any nystagmus, postural reactions, and mentation. Peripheral vestibular disease typically produces horizontal or rotary nystagmus with the fast phase away from the lesion, normal postural reactions, and normal mentation. Central vestibular disease may produce vertical nystagmus, postural deficits, altered mentation, or cranial nerve deficits beyond the vestibulocochlear nerve. These findings change the anesthetic plan because central disease carries a higher risk of respiratory and cardiovascular instability. Cardiovascular assessment should include auscultation, pulse quality, and blood pressure measurement. Vagal tone may be elevated in acute vestibular syndrome, and bradycardia is a recognized finding. The [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/) recommend a thorough preanesthetic evaluation including cardiovascular and respiratory assessment for all patients, and this is particularly relevant here because the autonomic disturbances of vestibular disease can interact with anesthetic drug effects. ## Pharmacologic Considerations Drug selection should prioritize agents with minimal emetic potential and predictable cardiovascular profiles. Opioids vary in their emetic effects. Morphine and hydromorphone are more likely to cause vomiting than methadone or buprenorphine, although individual variation is substantial. Anticholinergic premedication with atropine or glycopyrrolate may be considered to reduce vagal tone and bradycardia, but these drugs do not reliably prevent motion-induced nausea and may cause tachycardia. Antiemetic premedication is a rational component of the anesthetic plan. Maropitant, a neurokinin-1 receptor antagonist, acts centrally on the emetic center and is effective against a broad range of emetic stimuli. Its use before anesthesia in patients with vestibular disease is supported by its mechanism of action, though the evidence base specific to vestibular patients is limited. Phenothiazines such as acepromazine have antiemetic properties but also cause vasodilation and hypotension, which may be poorly tolerated in a patient with already altered autonomic tone. Propofol and alfaxalone are both acceptable induction agents, but the choice should account for cardiovascular status. Propofol causes dose-dependent hypotension and respiratory depression. Alfaxalone has a similar profile with slightly less pronounced cardiovascular depression in some patients. Neither agent is strongly emetic. Ketamine may be useful in patients with cardiovascular compromise because it maintains sympathetic tone, but it can increase heart rate and blood pressure and may exacerbate nausea in some patients. Inhalant anesthetics, particularly isoflurane and sevoflurane, are commonly used for maintenance. Both cause dose-dependent hypotension and respiratory depression. The emetic potential of inhalants is primarily relevant during recovery, when low concentrations can trigger nausea as consciousness returns. ## Anesthetic Technique and Equipment Selection The anesthetic plan for a vestibular patient must prioritize cardiovascular stability, minimal vestibular stimulation, and a recovery profile that preserves balance and coordination. No single protocol suits every patient. The choice depends on the underlying etiology, the patient's cardiovascular reserve, and the procedure planned. ### Premedication Premedication serves three purposes in the vestibular patient: anxiolysis, analgesia, and attenuation of nausea. Anticholinergics such as atropine or glycopyrrolate are often justified in this population because vagally mediated bradycardia can accompany vestibular stimulation and because many ear procedures elicit the oculocardiac reflex. The [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/) recommend that anticholinergic use be individualized instead of routine, but the vestibular patient frequently meets the criteria for inclusion. Opioids provide analgesia but may worsen nausea through central emetic pathways. Morphine and hydromorphone are more emetogenic than methadone or buprenorphine. For patients with active vomiting or severe motion sensitivity, choose a less emetogenic opioid or combine the opioid with a prophylactic antiemetic. Phenothiazines such as acepromazine have antiemetic properties but cause vasodilation and hypotension. If acepromazine is used, reduce the dose and expect a greater need for fluid support. Benzodiazepines do not address nausea and provide minimal analgesia, but they can reduce the dose of other agents and may be useful in anxious patients with limited cardiovascular reserve. ### Induction and Maintenance Induction agents that preserve cardiac output are preferred. Propofol is acceptable but causes dose-dependent hypotension and respiratory depression. Alfaxalone offers similar characteriztics with less injection pain. Ketamine provides cardiovascular support through sympathetic stimulation but may increase intracranial pressure in patients with suspected intracranial extension of ear disease. Etomidate preserves cardiovascular stability but suppresses adrenal function and is rarely necessary. Maintenance with inhalant anesthesia is standard. Isoflurane and sevoflurane both permit rapid adjustment of depth, which is valuable when surgical stimulation varies. Sevoflurane has lower blood solubility and allows faster recovery, which may benefit patients who need to regain balance quickly. However, the difference is small and does not justify changing protocols solely for recovery speed. Total intravenous anesthesia with propofol or alfaxalone infusions is an alternative when inhalant delivery is problematic, but it requires careful monitoring of depth and respiratory function. ### Airway Management Ear surgery often occurs with the head positioned laterally or rotated, which can kink an endotracheal tube or cause accidental extubation. Secure the tube firmly and verify cuff integrity before positioning. The surgeon may need to reposition the head during the procedure, so the anesthetist must recheck tube position and breath sounds after each change. For procedures involving the middle ear, the surgeon may request that the tube cuff be deflated temporarily to assess for a cerebrospinal fluid leak, but this should only be done with explicit communication and immediate reinflation capability. ## Monitoring Parameters and Interpretation Standard monitoring applies, but certain parameters deserve emphasis in the vestibular patient. The [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/) specify that blood pressure, electrocardiography, pulse oximetry, capnography, and temperature should be assessed at least every five minutes during maintenance. | Parameter | Target or Threshold | What It Detects | Action if Abnormal | |---|---|---|---| | Mean arterial pressure | Above 60 mm Hg in dogs, above 70 mm Hg in cats | Hypoperfusion from vasodilation, hemorrhage, or deep anesthetic plane | Reduce inhalant, administer fluid bolus, consider vasopressor | | Heart rate | Within species reference range | Bradycardia from oculocardiac reflex or vagal stimulation | Stop surgical stimulus, administer anticholinergic | | End-tidal CO2 | 35 to 45 mm Hg | Hypoventilation from positioning or opioid effect | Reduce inhalant, assist ventilation | | SpO2 | Above 95% | Hypoxemia from airway kinking or pulmonary compromise | Check airway, increase inspired oxygen | | Temperature | Above 37°C | Hypothermia prolonging recovery and increasing shivering | Active warming, reduce anesthetic exposure | | Capnograph waveform | Stable plateau | Rebreathing, airway obstruction, or circuit disconnection | Inspect circuit, verify tube position | The oculocardiac reflex deserves particular attention during middle ear surgery. Traction on the ear canal or manipulation of the tympanic bulla can trigger bradycardia or asystole. The anesthetist should alert the surgeon at the first sign of heart rate decline and be prepared to administer an anticholinergic immediately. Communication between anesthetist and surgeon is the primary preventive measure. ## Nausea and Balance in the Perianesthetic Period Vestibular patients are prone to nausea, vomiting, and disorientation during recovery. These problems are also uncomfortable, they increase the risk of aspiration, self-trauma, and prolonged hospitalization. Prophylactic antiemetics should be considered before recovery instead of after vomiting occurs. Maropitant, a neurokinin-1 receptor antagonist, blocks substance P centrally and is effective against both motion-induced and opioid-induced vomiting. It can be given before premedication to provide coverage through the perianesthetic period. Ondansetron and other 5-HT3 antagonists reduce vomiting but have less effect on nausea itself. Metoclopramide promotes gastrointestinal motility but is less useful for vestibular nausea and may worsen symptoms in some patients. Antihistamines such as diphenhydramine and meclizine have antivertigo properties but are not commonly used in veterinary anesthesia. Their sedative effects may confound neurologic assessment in the recovery period. For patients with suspected central vestibular disease, antiemetics that cause sedation should be used cautiously because they can mask deterioration. ## Recovery and Postanesthetic Care Recovery is the highest-risk period for the vestibular patient. The patient emerges with impaired balance, possible nystagmus, and a tendency to roll or fall toward the affected side. The recovery area must be padded, and the patient should be positioned in sternal recumbency with support on both sides. Head elevation may reduce vestibular symptoms but can compromise blood pressure in hypotensive patients. Extubation should occur when the patient has a strong swallowing reflex and can maintain airway patency. Premature extubation risks aspiration of saliva or blood from the ear canal. Delayed extubation risks the patient becoming agitated while intubated. The anesthetist must judge the balance individually. Postoperative analgesia should be multimodal. The [WSAVA global pain council guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/) emphasize that pain recognition and treatment should be species-appropriate and individualized. Ear surgery can be painful, particularly when bone is involved. Nonsteroidal anti-inflammatory drugs provide good analgesia but should be withheld in patients with suspected intracranial hemorrhage or those receiving corticosteroids. Opioids may be needed but should be combined with antiemetic coverage. ## Documentation and Communication The anesthetic record for a vestibular patient should include the baseline neurologic findings, the antiemetic plan, and the response to positioning changes. Document any episodes of bradycardia or hypotension and the intervention used. Note the time of extubation and the patient's ability to maintain sternal recumbency. This information guides the recovery team and helps the clinician distinguish anesthetic effects from progression of the underlying disease. The [MSD Veterinary Manual](https://www.msdvetmanual.com/) emphasizes that vestibular disease has many causes and that the prognosis depends on the underlying etiology. The anesthetic record should therefore include enough neurologic detail to allow serial comparison. A patient who cannot stand before anesthesia should not be expected to stand immediately after recovery, and the record should reflect the baseline status to avoid misinterpretation. ## Checklist for Managing Vestibular Patients During Anesthesia The following checklist consolidates the key decision points. It is intended for clinical use and can be adapted to institutional protocols. - Confirm baseline neurologic status and document nystagmus direction, head tilt, and ability to stand - Assess cardiovascular reserve and volume status before premedication - Select premedication with low emetic potential or add prophylactic antiemetic - Consider anticholinergic premedication for patients at risk of oculocardiac reflex - Secure endotracheal tube and verify cuff before positioning - Recheck tube position after each head repositioning - Monitor heart rate continuously and alert surgeon at first sign of bradycardia - Maintain mean arterial pressure above 60 mm Hg in dogs and 70 mm Hg in cats - Administer antiemetic before recovery if not already given - Pad the recovery area and support the patient in sternal recumbency - Extubate when swallowing reflex returns and airway patency is assured - Document baseline neurologic status, intraoperative events, and recovery milestones - Communicate the antiemetic and analgesic plan to the recovery team Species differences matter. Cats are more sensitive to the hypotensive effects of acepromazine and require lower doses or alternative sedation. Cats also metabolize some opioids differently and may experience prolonged sedation or dysphoria. Brachycephalic dogs have higher airway risk and may require more careful positioning and earlier extubation planning. The [AVMA practice resources](https://www.avma.org/resources-tools) note that anesthetic safety depends on appropriate equipment and trained personnel, which vary by practice setting. Clinicians should adapt the checklist to their available monitoring and staffing instead of applying it rigidly. ## Recognized Complications and Early Detection The most consequential anesthetic complication in vestibular patients is aspiration of gastric contents. Vestibular nausea, reduced gag reflex, and recumbency combine to place the airway at risk. Early detection depends on continuous capnography and close observation of the airway pressure waveform. A sudden rise in peak inspiratory pressure, falling SpO₂, or new crackles on thoracic auscultation should trigger immediate suctioning, head-down positioning, and bronchodilator therapy if bronchospasm develops. The AAHA anesthesia and monitoring guidelines identify capnography and pulse oximetry as essential monitors for all anesthetized dogs and cats, and they carry particular weight in this population [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/). Perianesthetic nausea and vomiting can occur during recovery as vestibular input returns. Detection relies on preemptive assessment of the nystagmus direction and severity, because a patient with active positional nystagmus is more likely to vomit when moved. Antiemetic coverage should be considered before recovery begins, and the patient should be positioned in sternal recumbency with the head elevated once extubation is safe. Hypoventilation is a second major failure mode. Vestibular patients often receive opioids for pain associated with otitis or surgery, and opioid-induced respiratory depression can be additive with residual inhalant anesthetic. Early detection requires serial capnography and blood gas analysis when end-tidal carbon dioxide trends above 55 mm Hg. The MSD Veterinary Manual notes that brachycephalic breeds carry additional risk for upper airway obstruction and hypoventilation during recovery, a consideration that becomes more pressing when vestibular disease impairs normal head posture [MSD Veterinary Manual professional reference](https://www.msdvetmanual.com/). ## Common Errors and Corrective Actions Less experienced clinicians frequently misjudge the depth of anesthesia in vestibular patients. The vestibulo-ocular reflex is often abnormal or absent, so the palpebral reflex and eye position cannot be used as reliable depth indicators. The corrective action is to rely on jaw tone, heart rate trends, and end-tidal inhalant concentration instead of ocular signs. A second recurring error is delaying extubation until the patient is fully awake without first confirming that the gag reflex has returned. In vestibular patients, the gag reflex may be depressed even when the patient appears responsive. The safer sequence is to extubate with the patient in sternal recumbency, head elevated, and suction available, then continue oxygen supplementation by mask. A third error involves fluid therapy. Overzealous crystalloid administration can worsen nausea and increase the risk of vomiting, while under-resuscitation compounds hypotension from inhalant anesthetics. The corrective action is to use a balanced electrolyte solution at a maintenance rate unless hypovolemia is documented, and to treat hypotension with vasopressors instead of fluid boluses when the patient is euvolemic. ## Limitations of the Evidence and Divergent Expert Opinion The evidence base for anesthetic management of vestibular syndrome is largely extrapolated from human neuroanesthesia and from general small animal anesthesia guidelines. Controlled trials specific to veterinary vestibular patients are lacking. Expert opinion diverges on two points. First, whether routine antiemetic prophylaxis should be administered to all vestibular patients or reserved for those with active vomiting. Second, whether opioids should be avoided entirely in favor of nonsteroidal anti-inflammatory drugs and local blocks, given the emetic potential of some opioids. The WSAVA pain guidelines support multimodal analgesia but do not resolve the opioid question for this specific population [WSAVA global pain council guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/). Clinicians should document their analgesic and antiemetic choices and the reasoning behind them. ## Referral, Consultation, and Reporting Referral to a specialist anesthesiologist or neurologist is warranted when vestibular signs progress during hospitalization, when the patient fails to regain sternal posture within 12 hours of recovery, or when repeated vomiting compromises hydration and electrolyte balance. Consultation with a veterinary neurologist is appropriate before anesthesia when intracranial disease cannot be excluded, because raised intracranial pressure changes the induction and maintenance strategy. Laboratory involvement is indicated when serial blood gas analysis reveals persistent hypoventilation or when electrolyte abnormalities, particularly hypokalemia from vomiting, require correction before extubation. Regulatory reporting obligations vary by jurisdiction. The AVMA practice resources advise veterinarians to be familiar with local requirements for adverse event reporting related to anesthetic drugs and devices [AVMA professional practice resources](https://www.avma.org/resources-tools). The WOAH terrestrial animal health code addresses reportable neurologic disease in production animals, and while vestibular syndrome in companion animals is not typically reportable, clinicians should rule out infectious causes such as otitis interna with systemic spread before concluding the case is closed [WOAH terrestrial animal health standards](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/). ## Troubleshooting Guide | Observation | Likely Cause | Discriminating Check | |---|---|---| | Rising peak airway pressure, falling SpO₂ | Aspiration | Thoracic auscultation, suction airway, capnography waveform | | End-tidal CO₂ above 55 mm Hg | Opioid or inhalant respiratory depression | Blood gas analysis, reduce anesthetic depth, consider reversal agent | | Hypotension with normal heart rate | Vasodilation from inhalant | Assess fluid status, reduce inhalant, vasopressor trial | | Vomiting in recovery | Vestibular nausea | Assess nystagmus, position sternal, administer antiemetic | | Prolonged recumbency beyond 12 hours | Central vestibular involvement | Neurologic examination, consider intracranial imaging referral | ## Frequently Asked Questions ### How Should I Adjust the Anesthetic Plan When Advanced Monitoring Equipment Is Unavailable? When pulse oximetry, capnography, or blood pressure measurement is absent, increase the frequency of manual assessments. Palpate the pulse quality and mucous membrane color every five minutes. Monitor capillary refill time, jaw tone, and palpebral reflexes to estimate anesthetic depth. Auscult heart rate and lung sounds repeatedly. For vestibular patients, the risk of positional hypotension and nausea-related bradycardia is higher, so manual checks must be systematic. The [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/) emphasize that even basic monitoring, performed consistently, reduces morbidity. If Doppler blood pressure is available but oscillometric is not, use it. If no blood pressure device exists, urine output and peripheral pulse quality become your primary perfusion indicators. ### What Is the Minimum Equipment Set I Should Refuse to Anesthetize a Vestibular Patient Without? A functional intravenous catheter, a secure airway device, and a means of positive pressure ventilation are non-negotiable. Vestibular patients often vomit during recovery, and aspiration is the leading avoidable complication. Without an endotracheal tube with an inflated cuff, you cannot protect the airway. You also need a suction source to clear oropharyngeal secretions before extubation. A laryngoscope is strongly recommended because these patients may have head tilt or nystagmus that complicates blind intubation. The [AAHA anesthesia and monitoring guidelines](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/) list pulse oximetry and capnography as standard, but if you lack them, you can proceed with heightened manual vigilance. If you lack intravenous access or airway control, postpone the procedure and refer. ### How Does the Approach Differ for a Cat Compared with a Dog? Cats metabolize many drugs differently and are more prone to hypotension with alpha-2 agonists. They also vomit less predictably than dogs, so the absence of prior vomiting does not rule out aspiration risk. Cats with vestibular syndrome often have underlying otitis media or nasopharyngeal polyps, which can obstruct the airway during positioning. Preoxygenation is more critical because cats desaturate faster. Anticholinergic premedication may be considered more readily in cats because they are prone to vagally mediated bradycardia during otoscopic manipulation. Recovery in cats requires a quiet, dim environment because they are more disoriented and may injure themselves attempting to stand. The [MSD Veterinary Manual](https://www.msdvetmanual.com/) notes species differences in drug responses that should guide agent selection and dose adjustment. ### What Should I Document in the Medical Record Beyond Standard Anesthesia Notes? Record the baseline neurologic status, including direction of nystagmus, head tilt side, and whether the patient could stand before sedation. Document the severity of nausea and any vomiting episodes in the 24 hours before anesthesia. During recovery, note the time to sternal recumbency, the time to standing, and whether the patient required manual assistance. Record any rescue antiemetic administered and its effect. Document the extubation decision, specifically whether the patient was swallowing and had a gag reflex. The [AVMA practice resources](https://www.avma.org/resources-tools) emphasize that accurate records support continuity of care and medicolegal defense. If the patient cannot stand within two hours of recovery, document that finding and the differentials considered, including residual vestibular ataxia versus prolonged anesthetic effect. ### How Do I Explain the Risks to an Owner Who Is Anxious About Anesthesia? Use concrete language about the specific risks instead of general reassurance. Explain that the ear disease itself causes nausea and balance problems, and anesthesia can temporarily worsen both. State that vomiting during recovery is common and that the team is prepared to manage it. Describe the monitoring equipment and what each device checks. Explain that the patient may be more wobbly after surgery than before and that this is expected. The [WSAVA Global Pain Council guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/) support a multimodal approach that includes client communication as part of perioperative care. Offer a timeline: most patients show improved balance within 24 to 48 hours, though head tilt may persist. Ask the owner about their concerns directly and address each one specifically. ### When Should I Refer a Vestibular Patient to a Specialist instead of Proceed in General Practice? Refer when you lack equipment for airway management or blood pressure monitoring, when the patient has severe concurrent cardiac disease, or when the cause of vestibular signs is unclear after otoscopic and neurologic examination. Refer also when the patient fails to improve with medical therapy and imaging is needed to rule out intracranial disease. If the patient is unstable, such as with refractory vomiting causing dehydration or electrolyte abnormalities, stabilize before transport. The [WOAH terrestrial animal health standards](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/) address welfare during transport, which applies to moving a disoriented patient. A patient that cannot stand should travel on a padded surface with head support. If you refer, send the full record including baseline neurologic findings and the anesthetic plan you had formulated. ## Related Clinical & Scientific Guides * [Anesthetic Machine Leak Testing and Pressure Checks: A Step-by-Step Protocol](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthetic-machine-leak-testing-pressure-checks) * [Anesthetic Depth Assessment: Reflexes, Eye Position, and Ventilation](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthetic-depth-assessment-reflexes-eye-position) * [Anesthesia for Patients with Obesity: Challenges and Solutions](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-obesity-challenges-solutions) ## References and Further Reading - [Bone regenerative medicine: classic options, novel strategies, and future directions.](https://pubmed.ncbi.nlm.nih.gov/24628910/). 2014. - [AAHA Anesthesia and Monitoring Guidelines for Dogs and Cats](https://www.aaha.org/resources/2020-aaha-anesthesia-and-monitoring-guidelines-for-dogs-and-cats/). AAHA. - [WSAVA Global Pain Council Guidelines](https://wsava.org/global-guidelines/global-pain-council-guidelines/). WSAVA. - [MSD Veterinary Manual, Professional Edition](https://www.msdvetmanual.com/). MSD Veterinary Manual. - [American Veterinary Medical Association Practice Resources](https://www.avma.org/resources-tools). American Veterinary Medical Association. - [WOAH Terrestrial Animal Health Code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/). WOAH. ## Related Articles - [Anesthesia for Patients with Ear Hematoma: Surgical Repair](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-ear-hematoma-surgical-repair) - [Anesthesia for Patients with Dental Disease: Extractions and Cleaning](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-dental-disease-extractions-cleaning) - [Anesthesia for Patients with Endocrine Disease: Diabetes and Hyperthyroidism](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-endocrine-disease-diabetes-hyperthyroidism) - [Anesthesia for Patients with Gastrointestinal Disease: Aspiration Risk](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-gastrointestinal-disease-aspiration-risk) - [Anesthesia for Patients with Hematologic Disease: Coagulopathy and Anemia](/knowledge/veterinary-medicine/anesthesia-analgesia/anesthesia-patients-hematologic-disease-coagulopathy-anemia) > This article is educational professional reference material for veterinary audiences. It is not a substitute for veterinary diagnosis, individual clinical judgment, current product labeling, or applicable regulatory requirements.